Working with Solid State Disks

Unlike the regular hard disks that are electromechanical devices containing moving parts, SSDs use semiconductors as their storage medium and have no moving parts. Typically, SSDs are very resilient and provide faster access to data.

Support of SSDs with ESXi provides the following benefits:

You can use VMFS datastores that are created on SSD storage devices to allocate space for ESXi host cache.

You can use SSDs for such features as Flash Read Cache and Virtual SAN. Local SSDs are required for these features.

Use of SSDs increases virtual machine consolidation ratio as SSDs can provide very high I/O throughput.